class_docstr: Unit tests for the ``rydberg_drive`` function
docstr: Test that when detuning not specified, the drive term is correctly defined.
docstr_tok: ["Test","that","when","detuning","not","specified",",","the","drive","term","is","correctly","defined","."]
code: def test_no_detuning(self):
      """Test that when detuning not specified, the drive term is correctly defined."""
  
      def f(p, t):
          return np.cos(p * t)
  
      Hd = rydberg_drive(amplitude=f, phase=1, detuning=0, wires=[0, 3])
  
      ops_expected = [
          qml.Hamiltonian([0.5, 0.5], [qml.PauliX(0), qml.PauliX(3)]),
          qml.Hamiltonian([-0.5, -0.5], [qml.PauliY(0), qml.PauliY(3)]),
      ]
      coeffs_expected = [
          AmplitudeAndPhase(np.cos, f, 1),
          AmplitudeAndPhase(np.sin, f, 1),
      ]
      H_expected = HardwareHamiltonian(coeffs_expected, ops_expected)
  
      assert qml.equal(Hd([0.1], 10), H_expected([0.1], 10))
      assert isinstance(Hd, HardwareHamiltonian)
      assert Hd.wires == Wires([0, 3])
      assert Hd.settings is None
      assert all(
          isinstance(coeff, AmplitudeAndPhase) for coeff in Hd.coeffs
      )
      assert len(Hd.coeffs) == 2
      assert all(
          qml.equal(op, op_expected)
          for op, op_expected in zip(Hd.ops, ops_expected)
      )
  
imports: import numpy
  import pytest
  import pennylane
  from pennylane.pulse import rydberg_interaction, rydberg_drive
  from pennylane.pulse.hardware_hamiltonian import HardwareHamiltonian, HardwarePulse, AmplitudeAndPhase
  from pennylane.wires import Wires
  from pennylane.pulse.rydberg import RydbergSettings
label_desc: Use image node_id 4 for calling the TestRydbergDrive obj's underlying member method code with example usage: obj.test_no_detuning() and returns: np